Crafted from 100% A grade cow hide. Old fashioned vegetable tanned. It means the tanning process takes 6 weeks instead of days. Tree bark from Chestnut, Mimosa, Oak and Willow plus leaves and roots are commonly used. This process transforms the hide to a unique look, texture feel, and smell associated with quality. The natural individual look of each pair gives great pleasure. A manufactured firm fit stretches to your unique hands. Brass eyelet for easy personal attachment.